US-Iran Tensions: IMO cited “regional tensions” as the reason for the personnel’s departure from the US Air Base. This confirmation from Qatar comes just hours after the Indian Embassy in Tehran issued an advisory for the Indian nationals currently in Iran to leave the country at the earliest. US-Iran Tensions: IMO cited “regional tensions” as the reason for the personnel’s departure from the US Air Base. This confirmation from Qatar comes just hours after the Indian Embassy in Tehran issued an advisory for the Indian nationals currently in Iran to leave the country at the earliest.